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Vishwas jain
- 1. Submitted to Mr. Damodar kumawat (h.o.d. eee dept.) submitted by Vishwas jain 11emhex062
- 3. Power Supply Installation (PSI) Overhead Equipment (OHE) Remote Control equipment ◦ RCC [Remote Control Center] ◦ SCADA- [Supervisory Control and Data Acquisition system]
- 4. Types of traction system Advantages of using electric traction system Types of electric traction advantages of electric traction locomotives Tss , sp , ssp Ohe equipment Breaking submitted by vishwas
- 5. Action of drawing some thing over a surface Or the system which uses electric power for traction is called electric traction submitted by vishwas
- 6. Non electrical traction 1) steam engine drive 2) internal combustion-engine drive Electrical traction 1) self contained vehicles 2) vehicles which receive electric power submitted by vishwas
- 8. Cleanliness Low Maintenance cost Less Starting time High starting torque High acceleration High traffic handling capacity Easy Breaking submitted by vishwas
- 9. Electric Traction Systems DC Traction AC Traction 1- phase 3-phase Multi system submitted by vishwas
- 10. power supply •1500 v dc supply is used •Both ohe & third rail method can be used Dc series motors •High starting torque •Smaller weight to H.P ratio •Low maintenance cost •High rate of acceleration & retardation substation •Fed with 33 to 133 kv 3-phase power supply •Convert high vtg 1500 or 3000 v ac supply •Basically contain x-mer rectifier & converter ckts submitted by vishwas
- 11. Power supply •25 kv electrical power supply is use in ohe •High vtg is use to reduces the losses in overhead lines •Because of high vtg is use distance b/w s.s increases •Third rail method cant be use in ac system substation •Sub station is fed to 132kv supply •This high vtg is converted into 25 kv ac supply •Sub station in ac system are cheaper •Basically contain x-mer •Some times frequency converters are also use at ss • Series dc motors • In locomotives dc series motors are use submitted by vishwas
- 12. I. High Starting torque II. Low maintenance cost III. High rate of acceleration & retardation IV. Easy speed control Disadvantage I. Only one disadvantage is the necessity of locating ac/dc conversion substations at short distance apart. submitted by vishwas
- 13. Advantage of 25 KV AC Traction over 1500 V DC Traction Reduced requirement of copper, steel for supports and cement because foundations are lighter. Increased substation spacing - 50 to 80 kms as compared to 8 to 10 kms for DC traction. There is direct application of industrial frequency. submitted by vishwas
- 16. Traction Substation or feeder post (SSPs)-Sub Sectioning Post SP Ohe (over head equipment) Centenary , droppers , contact wire Running rails work as return path Boosters transformers Pantograph submitted by vishwas
- 19. SCHEMATIC DIAGRAM OF TRACTION SUB STATION Traction Sub Station R,Y R,Y (220/132/110 Kv) LOCO RAIL OHE 25 KV AC Single phase submitted by vishwas
- 20. TSS 1 TSS 2 Neutral section (SP) (SSPs) (SSPs)-Sub Sectioning Post Sub-Sector Sector SCHEMATIC DIAGRAM submitted by vishwas
- 23. submitted by vishwas Ratings for l.v. 42kv for hv 120kv
- 25. A short section of insulated dead over-head equipment which separates the sectors fed by two adjacent substations which are normally connected to different phases. submitted by vishwas
- 26. OHE Arrangement Mast Mast Centenary Wire Contact Wire Dropper Automatic Tensioning Device submitted by vishwas
- 27. Auto Tensioning Device (ATD) submitted by vishwas
- 29. Contact wire – ◦ cross sectional area - 107 sq.mm. ◦ diameter - 12.24 mm ◦ normal tension – 1000 kg ◦ breaking load – 3905 kg Catenary wire – ◦ cross sectional area - 65 sq.mm. ◦ diameter – 10.50 mm ◦ Normal tension – 1000 kg ◦ breaking load – 3920 kg submitted by vishwas
- 30. DROPPERS ◦ A fitting used in overhead equipment construction for supporting contact wire from catenary BONDS ◦ An electrical connection across a joint in or between adjacent lengths of rail (structure bond, continuity bond, cross bond etc.) submitted by vishwas
- 32. Modern microprocessor technology and the availability of efficient and compact power components have changed that picture. In 3-phase AC locos, the input (single-phase AC) from the OHE is rectified and then 3- phase AC is generated from it, whose voltage, phase, and frequency can be manipulated widely, without regard to the voltage, phase, frequency of the input power from the OHE submitted by vishwas